package com.itheima.web;

import com.itheima.pojo.User;
import com.itheima.service.UserService;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.*;
import java.io.IOException;

@WebServlet("/loginServlet")
public class LoginServlet extends HttpServlet {
        private UserService service=new UserService();

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //1.获取用户名和密码
        String username = request.getParameter("username");
        String password = request.getParameter("password");

        //获取复选框数据
        String remember = request.getParameter("remember");

        //2.调用对应的service
        User user = service.login(username, password);

        //3.判断
        if (user != null){
            //登录成功。跳转到查所有的selectAllServlet

            //判断用户是否勾选记住我
            if ("1".equals(remember)){
                //勾选了，发送Cookie

                //1.创建cookie对象
                Cookie c_username = new Cookie("username",username);
                Cookie c_password = new Cookie("password",password);

                //设置cookie存活时间
                c_username.setMaxAge(60*60*24*7);
                c_password.setMaxAge(60*60*24*7);

                //2.发送对象
                response.addCookie(c_username);
                response.addCookie(c_password);

            }

            //将转跳成功后的User对象，存储到session
            HttpSession session = request.getSession();
            session.setAttribute("user",user);

            String contextPath = request.getContextPath();
            response.sendRedirect(contextPath+"/selectAllServlet");
        }else {
            //登录失败

            //存储错误信息的提示到request
            request.setAttribute("login_msg","用户名或密码错误");

            //跳转到login.jsp
            request.getRequestDispatcher("/login.jsp").forward(request,response);
        }

    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doGet(request, response);
    }


}
